If you load the save again and click the A again, do you still get different people? And when you accept one (say the left-most one), does it generate the same avatar?
And if you try it again, do you get yet another different set of people with different set of stats, and when you select the one at the same position as the last one, does the avatar still be the same as the previous test?
These tests are used determine which things (idol names, stats, avatars) are generated, and which were already decided when the audition was completed. They can also help sadambober zero-in to the fix.
Or I suppose you could peek inside the save game. It's in JSON, so it's quite easy to change into a human-readable format.